... axial flow) consist of rotating vanes, enclosed within a housing or casing, used to impart energy to a fluid through centrifugal ... , and a stationary element made up of a casing (volute or solid), stuffing box, and bearings.Corrosion resistant radial flow pumps ... liquid. Axial flow centrifugal pumps develop pressure by the propelling or lifting action of the vanes of the impeller on the liquid ...